Arduino: 1.8.13 (Mac OS X), Board: "Error compiling Arduino Mega or Mega 2560"

Development Tools IDE 1.x
1

This problem was presented before for 1.8.10, but the thread is closed. I have a Mega 2560 with a Ramps 1.4 shield. I get the error message for 1.8.13.

The Board info window says
BN: Unknown Board
VID: 1A86
PID: 7523
SN: UPload any sketch to obtain it

2

Please post the FULL ERROR & Code (Or link to the code)

3

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